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Finding the Fourth Proportional to 425,900.75, 638,712.88 and 141,514.92

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Solution

The fourth proportional to 425,900.75, 638,712.88 and 141,514.92 is: 212,226.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,900.75 : 638,712.88 = 141,514.92 : x
  2. Step 2: Convert to fraction form
    425,900.75/638,712.88 = 141,514.92/x
  3. Step 3: Cross multiply
    425,900.75x = 638,712.88 × 141,514.92
  4. Step 4: Simplify right side
    425,900.75x = 90,387,401,762.38
  5. Step 5: Solve for x
    x = 90,387,401,762.38/425,900.75
  6. Step 6: Final answer
    x = 212,226.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.